Answer:
A
Step-by-step explanation:
the sum of the two angles is 90 degrees
x + 52 = 90
x = 38 degrees
Answer:
When the two values are different
Step-by-step explanation:
Like in an inequality equation.
For example:

The answer would be anything greate than or equal to 30, but you would need to find x. The number line would be very useful
Hope this helps